Our Mission

To raise our level of excellence to represent our strong belief in God and our desire to serve each client as faithful stewards of what we have been given.

About Us

Window World of Southern Illinois & Window World of The Praireland are subsidiaries of Sun-Tec, Inc. (serving South Central & Southern Illinois since 1994). Our corporate office is located in Centralia. We take pride in being a part of the rich heritage and history of this area. We have four locations to serve 36 counties, with offices in Effingham, Centralia, Mt. Vernon and Marion.

We also take pride in the quality of the products that Window World has provided to its national network of dealers. Our “Simply the BEST for LESS” is more than a slogan, it’s Window World’s promise to our customers.

As part of America’s largest replacement window company, we have access to incredible buying power on high quality windows and siding that many competitors don’t have. We are "The ORIGINAL $189 Window Guys!" Many companies are trying to copy our pricing, but they aren’t able to copy the pricing and quality. That’s why we offer our 100% guaranteed low price.

Window World of Southern Illinois can help you save on heating and cooling costs, time and maintenance while increasing the value of your home by installing Energy Star approved windows and siding. In fact, Window World, Inc. has been named an Energy Star corporate partner.

We offer a complete line of windows—double-hung, slider, picture, casement, bay, bow, special shape, and basement windows, endorsed by Good Housekeeping, and our installers are factory certified.

We also carry ComfortWorld siding in beautiful colors and styles, soffit, fascia, and the newest PRODIGY siding—the only R-5, engineered, insulated siding panel available today!

Want to add a beautiful new sunroom or conservatory to your home? Window World of Southern Illinois can do that, too, along with patio and entry doors, to complete your home makeover.

Members of NARI (National Association of the Remodeling Industry), Centralia Chamber of Commerce, Salem Chamber of Commerce, Jefferson County Chamber of Commerce, and Marion Chamber of Commerce.

Call for a FREE in-home consultation with no high-pressure.

We have a variety of financing options available and we also accept MasterCard, Visa, & Discover.

Call 1.800.NEXT.WINDOW or toll free at 1.866.663.3825.